Marking A Position & Position Averaging Function - Garmin GPS 12XL Owner's Manual & Reference

Marking a Position
The GPS 12XL allows you to mark and store up to
500 position as waypoints. A waypoint can be entered
by taking an instant electronic fix, by manually enter-
ing coordinates (pg. 20), or by using the bearing and
distance to a known position (pg. 20).
To mark your present position:
M
1. Press . The mark position page will appear,
showing the captured position and a default three-
digit name.
2. To save a default name and symbol, press
confirm the 'SAVE?' prompt.
Position Averaging Function
The GPS 12XL positioning averaging function will
help reduce the effects of selective availability upon
position error when marking a waypoint.
1. After you have pressed the
'AVERAGE?' field and press
Merit (FOM) field will display the value reflecting esti-
mated accuracy of the averaged position. Note: As
the GPS 12XL calculates the FOM, it will rapidly
change before it stabilizes on one number.
2. The unit will continue averaging until you have high-
lighted 'SAVE?' and pressed
To enter a different waypoint name:
1. Highlight the waypoint name field, and press
2. Make the appropriate changes, and press
3. Highlight 'SAVE?', and press
Note: To enter a different waypoint symbol or com-
ment, see pg. 21.
To add this waypoint to a route:
1. Highlight the 'Add to route number' field, and press
E
.
2. Enter a route number, press
route number, and
M
key, highlight the
E
. The Figure of
E
.
E
.
E
to confirm the
E
again to save the waypoint.
E
to
After initiating the posi-
tion averaging function, a
Figure of Merit value will
be displayed, and the
'SAVE?' field will auto-
matically be highlighted.
E
.
E
.
The GPS 12XL will save
new waypoints with a
default three-digit name.
To add the waypoint to a
route, enter the desired
route number, highlight
'SAVE?'
ENTER.
REFERENCE
Position
Averaging
and press
17